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Test: Swift - The Implementation of Optionals
3. var name: String? — what is that line in Swift equivalent to?
Results Congratulations! Correct Answer. You Answered: None. If you took the test, your answer will show up here. Correct Answer: var name: Optional Explanation String? is same as Optional — that’s the internal implementation. Obviously, you want to use ? for its readability and succinct usage.Take the Test Take the complete test on this topic. You will be able to review answers to questions and get a test score.
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Test is Based on this Article
This article discusses how Optionals are implemented in Swift.
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Test on how Optionals are implemented internally in Swift.
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